CN102384291A - Self-operated flow control valve - Google Patents
Self-operated flow control valve Download PDFInfo
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- CN102384291A CN102384291A CN2011103412550A CN201110341255A CN102384291A CN 102384291 A CN102384291 A CN 102384291A CN 2011103412550 A CN2011103412550 A CN 2011103412550A CN 201110341255 A CN201110341255 A CN 201110341255A CN 102384291 A CN102384291 A CN 102384291A
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- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract 1
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- 230000001105 regulatory effect Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 239000010985 leather Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000003044 adaptive effect Effects 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 230000009467 reduction Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
The invention discloses a self-operated flow control valve. The self-operated flow control valve comprises a valve body, wherein the valve body is provided with an inlet and an outlet; a medium channel for communicating the inlet and the outlet is formed between the inlet and the outlet; a manual adjusting component for manually adjusting the flow rate of the medium channel and an automatic adjusting component for automatically adjusting the flow rate of the medium channel are arranged on the valve body; the automatic adjusting component comprises a valve core and a lower valve rod, wherein the valve core is arranged in a choke of the medium channel; the lower valve rod is fixedly connected with the valve core; the core valve is a sleeve-type valve core; the outer annular surface of the valve core is matched with the annular side wall of the choke; a fixing piece fixedly connected with the lower valve rod is arranged in the valve core; and a gap is reserved between the fixing piece and the inner side wall of the valve core. The self-operated flow control valve is simple in structure, convenient to manufacture and complete in function, reduces the corrosion of an adjustment valve core caused by a medium, prolongs the service life of the valve core, improves the adjustment precision of the control valve, and improves the operation stability of a product in a system.
Description
Technical field
The present invention relates to valve, particularly a kind of self-operated flow control valve.
Background technique
In existing flow control valve product, a kind of flow control valve that adopts the throttle element of complex curve bivalve valve structure is arranged, medium flows through from the gap between flap and the valve seat; Reach the purpose of Flow-rate adjustment along with the variation in this gap; This flow control valve is in actual applying working condition, and MEDIA FLOW flow velocity when the gap of flap and valve base chamber is accelerated, and quickens the wearing and tearing of flap easily; The working life of flap is short, and is easy to wear; And the curve shape of flap employing complicacy, processing, manufacturing, check are relatively more difficult, and the precision of flap is not easy assurance, can not dependable flow control valve Flow-rate adjustment precision.
Also has a kind of flow control valve in addition; As China national Department of Intellectual Property June in 2008 notice of authorization on the 25th a name be called the utility model patent of " flow control valve "; The patent No. is 200720114476.3, discloses a kind of flow control valve in this patent specification, comprises valve body that has water intake and water outlet and the lower end cap that is connected in valve body lower end; Between water intake and water outlet, be provided with the manual tune valve assembly of manual tune flow; Between manual tune valve assembly and lower end cap, be provided with the automatic regulating valve assembly, said automatic regulating valve assembly comprises that spool, leather cup and the spring, the leather cup that are used to regulate flow are arranged between valve body and the lower end cap and forms through leather cup and lower end cap between cavity, this cavity and the water outlet of a sealing and be provided with the passage that both are communicated that the lower end of spool and the leather cup of appeal are connected; The upper end of spool withstands on the manual tune valve assembly; Spring is arranged in the cavity, and the one of which end withstands on lower end cap, and the other end withstands on the lower end of spool.In the foregoing invention patent, spool adopts cylindric, has side opening at cylinder side wall; Medium flows through from the gap between spool side opening and the valve seat, along with the variation in gap reaches the purpose of Flow-rate adjustment, but flows through from side opening in actual applying working condition medium; Circulation area is little, and flow is limited, and particularly pressure reduction hour; The flow that flows through the sidewall side opening is littler, does not reach flow control accuracy; What spool adopted in addition is dual-support structure, in actual use, the spool type frequently reciprocating, the wearing and tearing of spool outer wall are very fast, and the life-span of spool is short, and fragile, the frictional force of dual-support structure product is big, and sensitivity is low during adjusting; Manually the Flow-rate adjustment assembly is after the flow manual adjustment puts in place, no auto-lock function, and the position that when pressure in the pipeline changes suddenly or water hammer is arranged, is prone to cause manual Flow-rate adjustment flap to configure changes, the flow value of influence setting; Last operating pressure differential scope is fixed, and probably at 30KPa-300Kpa, operating range is narrow, a little less than the adaptive capacity to operating mode, when system pressure changes above the operating pressure differential scope, is prone to cause the flow control valve regulatory function to lose efficacy, the degree of regulation forfeiture.
Summary of the invention
Problem to be solved by this invention just provides a kind of self-operated flow control valve, and is simple in structure, easily manufactured; Complete function; Reduce the erosion of medium, improve the working life of spool and the degree of regulation of control valve, and improve the stability that product moves in system regulating spool.
In order to solve the problems of the technologies described above; The present invention adopts following technological scheme: self-operated flow control valve; Comprise the valve body that is provided with import and outlet; Be provided with medium channel between import and the outlet and be communicated with, valve body is provided with the manual tune assembly of manual tune medium channel flow and the automatic adjusting part of regulating the medium channel flow automatically, and said automatic adjusting part comprises the spool and the lower valve rod that is fixedly connected with spool in the restriction that is located at medium channel; It is characterized in that: said spool is telescopic spool; The outer ring surface of spool cooperates with the restriction ring-side wall, and the inside of spool is provided with the fixed plate that is fixedly connected with lower valve rod, is provided with the gap between fixed plate and the spool madial wall.
Further; Said automatic adjusting part also comprises the bottom flange that is located on the valve body, is located at diaphragm and Regulation spring in the bottom flange; The edge of diaphragm is positioned between bottom flange and the valve body, and the middle part of diaphragm is positioned at the lower end of lower valve rod, forms pressure chamber between diaphragm and the bottom flange; The diaphragm top is communicated with medium channel; Be provided with the passage that is communicated with pressure chamber and outlet in bottom flange and the valve body, Regulation spring is positioned between lower valve rod and the bottom flange and with lower valve rod and upwards pushes away, and is provided with the spring regulation structure of the spring force that changes Regulation spring in the bottom flange bottom.
Further; Said spring regulation structure comprises lower spring cup and adjustable lever; Lower spring cup is located between Regulation spring and the bottom flange, and the lower end of Regulation spring is positioned at the bottom flange bottom through lower spring cup, and the bottom flange bottom is provided with the adjustment hole that installs adjustable lever; Through being threaded, adjustable lever passes adjustment hole and stretches into bottom flange inside and be against on the lower spring cup and the relative bottom flange of lower spring cup moved up and down when rotating in the relative adjustment hole between adjustable lever and the adjustment hole.
Further; The lower end of said lower valve rod is provided with the ladder section that diameter diminishes, and is arranged with locating washer and upper spring seat on the ladder section, and the middle part of diaphragm is clipped between locating washer and the upper spring seat; Ladder section lower end is provided with outside thread; Outside thread is provided with the nut that matches, and fastening nut makes on the step surface that moves and finally be against the ladder section on upper spring seat and the locating washer middle part of diaphragm is located, and the upper end of Regulation spring is positioned on the upper spring seat.
Further, be provided with valve seat in the said valve body, valve seat is positioned at the diaphragm top; Be provided with opening in the valve seat; The lower end of opening is a polygonal hole, and lower valve rod passes opening and is connected with diaphragm, and valve seat is threaded with valve body; The external diameter of valve seat is greater than the external diameter of spool, and the minimum diameter of opening is less than the external diameter of spool.
Further; Said manual tune assembly comprises the bonnet that is located on the valve body, is located at upper valve rod, Flow-rate adjustment window and adjusting handle in the bonnet; The lower end of upper valve rod is provided with at least one axial section down, and the Flow-rate adjustment window comprises joint and adjustment sheet, and joint is provided with the card holding trough that cooperates with the lower end of upper valve rod; The lower end that adjustment sheet is located at joint below and adjustment sheet is against the restriction upper-end surface; The internal diameter of adjustment sheet is sealed and matched between the middle part of upper valve rod and the bonnet greater than the width of the external diameter of spool and the adjustment sheet girth less than adjustment sheet place annulus, and the upper end of upper valve rod passes bonnet; The upper end of upper valve rod is provided with axial section at least one; Be provided with the hole that clamps that cooperates with the upper end of upper valve rod in the adjusting handle, on upper valve rod, be provided with the axial positioning structure of restriction upper valve rod axial displacement upper and lower, between adjusting handle and bonnet, be provided with circumferential self-locking structure.
Further, said axial positioning structure comprises annular groove, the boss that is located at upper valve rod middle part and is located at the shaft block ring in the annular groove, and boss is located at the annular groove top, and the diameter of boss outer side surface is greater than the internal diameter that clamps the hole.
Further, said circumferential self-locking structure comprises ring gear that is located in the adjusting handle and the external toothing that is located at the bonnet upper end, external toothing and ring gear engagement.
Further; The upper end of said upper valve rod also is provided with the compressing structure that adjusting handle elasticity is pressed down; Said compressing structure comprises pressure spring that is enclosed within the upper valve rod upper end and the threaded fastener that is located at the upper valve rod upper end; The width of threaded fastener is greater than the external diameter of pressure spring, and the lower end of pressure spring is against on the upper-end surface that clamps the hole, and the upper end of pressure spring is against on the lower end surface of threaded fastener.
Further, said threaded fastener comprises screw and pad, and the upper valve rod upper-end surface is provided with interior threaded hole, and screw cooperates with interior threaded hole, and the width of pad is greater than the external diameter of pressure spring, and the upper end of pressure spring is against on the lower end surface of pad.
After adopting technique scheme; The present invention has following advantage: the change valve core structure, reduce the manufacture difficulty of spool and the manufacture cost of flow control valve, and reduce the wearing and tearing of spool and valve seat; Reduce the erosion of medium, improve the working life of spool and the degree of regulation of control valve spool; Guarantee that at operating pressure differential hour stability of flow reaches the higher flows control accuracy; The manual tune assembly is provided with circumferential self-locking structure and can guarantees behind flow set, and the flow value of setting when system condition changes or not, and improves the stability that product moves in system; Regulate pressure differential range through the spring regulation structure and make the flow control valve operating range wideer, stronger to the adaptive capacity of operating mode.
Description of drawings
Below in conjunction with accompanying drawing the present invention is described further:
Fig. 1 is the structural representation of an embodiment of the present invention;
Fig. 2 is the plan view of spool;
Fig. 3 is the structural representation of automatic adjusting part;
Fig. 4 is the structural relation schematic representation of valve seat and spool;
Fig. 5 is the structural representation of manual tune assembly.
Embodiment
The structural representation of an embodiment of the present invention as illustrated in fig. 1 and 2; Self-operated flow control valve; Comprise the valve body 1 that is provided with import 101 and outlet 102; Be provided with medium channel 10 between import and the outlet and be communicated with, valve body is provided with the manual tune assembly 2 of manual tune medium channel flow and the automatic adjusting part 3 of regulating the medium channel flow automatically, and said automatic adjusting part comprises the spool 31 and the lower valve rod that is fixedly connected with spool 32 in the restriction 11 that is located at medium channel; Said spool is telescopic spool; The outer ring surface of spool cooperates with the restriction ring-side wall, and the inside of spool is provided with the fixed plate 311 that is fixedly connected with lower valve rod, is provided with gap 312 between fixed plate and the spool madial wall.
As shown in Figure 3; In the present embodiment, said automatic adjusting part also comprises the bottom flange 33 that is located on the valve body, is located at diaphragm 34 and Regulation spring 35 in the bottom flange, and the edge of diaphragm is positioned between bottom flange and the valve body; The middle part of diaphragm is positioned at the lower end of lower valve rod; Form pressure chamber 330 between diaphragm and the bottom flange, the diaphragm top is communicated with medium channel, is provided with the passage 12 that is communicated with pressure chamber and outlet in bottom flange and the valve body; Regulation spring is positioned between lower valve rod and the bottom flange and with lower valve rod and upwards pushes away, and is provided with the spring regulation structure of the spring force that changes Regulation spring in the bottom flange bottom.Here; Said spring regulation structure comprises lower spring cup 36 and adjustable lever 37; Lower spring cup is located between Regulation spring and the bottom flange, and the lower end of Regulation spring is positioned at the bottom flange bottom through lower spring cup, and the bottom flange bottom is provided with the adjustment hole 331 that installs adjustable lever; Through being threaded, adjustable lever passes adjustment hole and stretches into bottom flange inside and be against on the lower spring cup and the relative bottom flange of lower spring cup moved up and down when rotating in the relative adjustment hole between adjustable lever and the adjustment hole.In fact; Also can adopt the structure of nut fit adjustment bar to realize regulating the position of the relative bottom flange of lower spring cup; Concrete structure is fixed on nut in the adjustment hole exactly, and adjustable lever cooperates through being threaded with nut, can simplify the production technology and the process of adjustment hole like this.Spring force through the adjustment Regulation spring changes diaphragm magnitude of pressure differential up and down, thus the flow of regulating valve.
In addition; The lower end of said lower valve rod is provided with the ladder section 321 that diameter diminishes, and is arranged with locating washer 38 and upper spring seat 39 on the ladder section, and the middle part of diaphragm is clipped between locating washer and the upper spring seat; Ladder section lower end is provided with outside thread 322; Outside thread is provided with the nut 323 that matches, and fastening nut makes on the step surface that moves and finally be against the ladder section on upper spring seat and the locating washer middle part of diaphragm is located, and the upper end of Regulation spring is positioned on the upper spring seat.
As shown in Figure 4; Be provided with valve seat 13 in the said valve body, it mainly is the displacement lower limit that limits spool for the ease of the installation of spool simultaneously that valve seat is set, and valve seat is positioned at the diaphragm top; Be provided with opening 131 in the valve seat; The lower end of opening is a polygonal hole, polygonal hole is set is when being convenient to install to tighten valve seat, is set to inner hexagonal hole in the present embodiment; Lower valve rod passes opening and is connected with diaphragm, and valve seat is threaded with valve body, and the external diameter of valve seat is greater than the external diameter of spool, and the minimum diameter of opening is less than the external diameter of spool.
As shown in Figure 5; Said manual tune assembly comprises the bonnet 21 that is located on the valve body, is located at upper valve rod 22, Flow-rate adjustment window 23 and adjusting handle 24 in the bonnet, and the lower end of upper valve rod is provided with at least one axial section 221 down, and the Flow-rate adjustment window comprises joint 231 and adjustment sheet 232; Joint is provided with the card holding trough 233 that cooperates with the lower end of upper valve rod; Here mainly be relatively rotating of restriction upper valve rod and Flow-rate adjustment window, do not limit both moving to axial, following axial section can be provided with two or more; But quantity is provided with the lower outside face that too much can make upper valve rod and approaches circle, and circumferentially the limit rotation effect just is difficult to realize; The lower end that adjustment sheet is located at joint below and adjustment sheet is against the restriction upper-end surface; The internal diameter of adjustment sheet is greater than the width of the external diameter of spool and the adjustment sheet girth less than adjustment sheet place annulus; Be sealed and matched between the middle part of upper valve rod and the bonnet, the upper end of upper valve rod passes bonnet, and the upper end of upper valve rod is provided with axial section 222 at least one; Be provided with in the adjusting handle cooperate with the upper end of upper valve rod clamp hole 241; The effect of last axial section is similar with following axial section, also two or more can be set, and approaches circle but quantity is provided with the upper end outer side surface that too much can make upper valve rod; Circumferentially the limit rotation effect just is difficult to realize, makes the upper end cross section of upper valve rod rectangular such as being provided with four in the present embodiment; On upper valve rod, be provided with the axial positioning structure of restriction upper valve rod axial displacement upper and lower, between adjusting handle and bonnet, be provided with circumferential self-locking structure.
As preferred structure, said axial positioning structure comprises annular groove 223, the boss 224 that is located at upper valve rod middle part and is located at the shaft block ring 25 in the annular groove, and boss is located at the annular groove top, and the diameter of boss outer side surface is greater than the internal diameter that clamps the hole.The upper and lower of upper valve rod axial displacement just is limited in clamping lower end surface, hole and bonnet upper-end surface respectively like this.Said circumferential self-locking structure comprises ring gear 241 that is located in the adjusting handle and the external toothing 211 that is located at the bonnet upper end, external toothing and ring gear engagement.Here after requiring adjusting handle to move up; Before upper valve rod arrives the axial displacement upper limit; External toothing and ring gear can disengage from; Be converted into being described as size: under adjusting handle was in self-locking state, the width of external toothing and ring gear mate was less than the bonnet upper-end surface and clamp the distance between the lower end surface, hole.
In addition; In the present embodiment; The upper end of said upper valve rod also is provided with the compressing structure that adjusting handle elasticity is pressed down, and said compressing structure comprises pressure spring 26 that is enclosed within the upper valve rod upper end and the threaded fastener 27 that is located at the upper valve rod upper end, and the width of threaded fastener is greater than the external diameter of pressure spring; The lower end of pressure spring is against on the upper-end surface that clamps the hole, and the upper end of pressure spring is against on the lower end surface of threaded fastener.In the present embodiment; Said threaded fastener comprises screw 271 and pad 272, and the upper valve rod upper-end surface is provided with interior threaded hole 225, and screw cooperates with interior threaded hole; The width of pad is greater than the external diameter of pressure spring, and the upper end of pressure spring is against on the lower end surface of pad., the upper end of upper valve rod is provided with outside thread here, threaded fastener adopts nut to cooperate the location that also can realize pressure spring with outside thread.
Spool of the present invention adopts telescoping structure, and simple in structure, manufacturing is easy, and dimensional accuracy guarantees easily that also the throttling precision is high, and the noise that in throttling process, produces is little, and flap is not easy by erosion, long service life; At operating pressure differential hour, the area of passage of spool and valve base chamber is big, and stability of flow reaches the higher flows control accuracy; The manual tune assembly is provided with circumferential self-locking structure and can guarantees behind flow set, and pressure changes suddenly or when water hammer was arranged, the position that the manual tune assembly has configured can not change, and has improved the stability that product moves in system in the pipeline; Regulate pressure differential range through the spring regulation structure and make the flow control valve operating range wideer, stronger to the adaptive capacity of operating mode, more reliable performance.
The working principle of patent of the present invention is following: when medium when import gets into medium channel; Through the outlet of spool, Flow-rate adjustment window arrival valve, fluid has produced three sections different pressure areas under the effect of spool; Pressure in the zone between from the import to the spool is the highest, is designated as P1; The valve seat of flowing through arrives the diaphragm top and descends with the pressure that the spool of flowing through arrives the Flow-rate adjustment window, is designated as P2; The Flow-rate adjustment of flowing through window is minimum to the areal pressure of valve export, is called P3; Medium under the P3 pressure is through reacting on the bottom of diaphragm in the pressure chamber of valve body and the passage arrival bottom flange of valve gap and with the spring force one of Regulation spring; When system pressure raises; P2 increases; It is formed with joint efforts that the pressure that medium acts on diaphragm top just acts on the spring force of diaphragm below and Regulation spring greater than the medium P3 pressure under; Diaphragm drives lower valve rod and spool moves downward; The distance of spool and valve base chamber reduces, and therefore circulation area reduces between the two, and promptly the negotiability of valve-flow coefficient k v value reduces; Can remain unchanged according to flow formula
flow, realize new state of equilibrium; Vice versa, thereby reached the self-regulating purpose of flow.When needs manual adjustment flow; The pressure that pull-up adjusting handle, adjusting handle overcome pressure spring endwisely slips on upper valve rod, and the ring gear of adjusting handle and the external toothing of bonnet break away from engagement; Rotate adjusting handle and drive upper valve rod and Flow-rate adjustment window realization Flow-rate adjustment; When Flow-rate adjustment behind needs numerical value, unclamp adjusting handle, adjusting handle is under the pressure of pressure spring; Axially move down along upper valve rod, the ring gear of adjusting handle and the external toothing of bonnet mesh again automatically accomplishes the location auto-lock function; When the operating pressure differential of system changes the operating range of overshoot; Adjustable lever through instrument rotation bottom flange bottom; Adjustable lever is moved up or down; Regulate the position of the relative bottom flange of lower spring cup of adjustable lever upper end, the rigidity that changes Regulation spring realizes new balance, strengthens or reduce the pressure reduction operating range of product of the present invention.
Claims (10)
1. self-operated flow control valve; Comprise the valve body (1) that is provided with import (101) and outlet (102); Being provided with medium channel (10) between import and the outlet is communicated with; Valve body is provided with the manual tune assembly (2) of manual tune medium channel flow and regulates the automatic adjusting part (3) of medium channel flow automatically; Said automatic adjusting part comprises the spool (31) and the lower valve rod that is fixedly connected with spool (32) in the restriction (11) that is located at medium channel, and it is characterized in that: said spool is telescopic spool, and the outer ring surface of spool cooperates with the restriction ring-side wall; The inside of spool is provided with the fixed plate (311) that is fixedly connected with lower valve rod, is provided with gap (312) between fixed plate and the spool madial wall.
2. self-operated flow control valve according to claim 1; It is characterized in that: said automatic adjusting part also comprises the bottom flange (33) that is located on the valve body, is located at diaphragm (34) and Regulation spring (35) in the bottom flange; The edge of diaphragm is positioned between bottom flange and the valve body, and the middle part of diaphragm is positioned at the lower end of lower valve rod, forms pressure chamber (330) between diaphragm and the bottom flange; The diaphragm top is communicated with medium channel; Be provided with the passage (12) that is communicated with pressure chamber and outlet in bottom flange and the valve body, Regulation spring is positioned between lower valve rod and the bottom flange and with lower valve rod and upwards pushes away, and is provided with the spring regulation structure of the spring force that changes Regulation spring in the bottom flange bottom.
3. self-operated flow control valve according to claim 2; It is characterized in that: said spring regulation structure comprises lower spring cup (36) and adjustable lever (37); Lower spring cup is located between Regulation spring and the bottom flange; The lower end of Regulation spring is positioned at the bottom flange bottom through lower spring cup; Bottom flange bottom is provided with the adjustment hole (331) that installs adjustable lever, and through being threaded, adjustable lever passes adjustment hole and stretches into bottom flange inside and be against on the lower spring cup and the relative bottom flange of lower spring cup moved up and down when rotating in the relative adjustment hole between adjustable lever and the adjustment hole.
4. self-operated flow control valve according to claim 2; It is characterized in that: the lower end of said lower valve rod is provided with the ladder section (321) that diameter diminishes; Be arranged with locating washer (38) and upper spring seat (39) on the ladder section; The middle part of diaphragm is clipped between locating washer and the upper spring seat, and ladder section lower end is provided with outside thread (322), and outside thread is provided with the nut (323) that matches; Fastening nut makes on the step surface that moves and finally be against the ladder section on upper spring seat and the locating washer middle part of diaphragm is located, and the upper end of Regulation spring is positioned on the upper spring seat.
5. self-operated flow control valve according to claim 2 is characterized in that: be provided with valve seat (13) in the said valve body, valve seat is positioned at the diaphragm top; Be provided with opening (131) in the valve seat; The lower end of opening is a polygonal hole, and lower valve rod passes opening and is connected with diaphragm, and valve seat is threaded with valve body; The external diameter of valve seat is greater than the external diameter of spool, and the minimum diameter of opening is less than the external diameter of spool.
6. self-operated flow control valve according to claim 1; It is characterized in that: said manual tune assembly comprises the bonnet (21) that is located on the valve body, is located at upper valve rod (22), Flow-rate adjustment window (23) and adjusting handle (24) in the bonnet; The lower end of upper valve rod is provided with at least one axial section (221) down; The Flow-rate adjustment window comprises joint (231) and adjustment sheet (232); Joint is provided with the card holding trough (233) that cooperates with the lower end of upper valve rod, and the lower end that adjustment sheet is located at joint below and adjustment sheet is against the restriction upper-end surface, and the internal diameter of adjustment sheet is greater than the width of the external diameter of spool and the adjustment sheet girth less than adjustment sheet place annulus; Be sealed and matched between the middle part of upper valve rod and the bonnet; The upper end of upper valve rod passes bonnet, and the upper end of upper valve rod is provided with axial section at least one (222), be provided with in the adjusting handle cooperate with the upper end of upper valve rod clamp hole (241); On upper valve rod, be provided with the axial positioning structure of restriction upper valve rod axial displacement upper and lower, between adjusting handle and bonnet, be provided with circumferential self-locking structure.
7. self-operated flow control valve according to claim 6; It is characterized in that: said axial positioning structure comprises annular groove (223), the boss (224) that is located at the upper valve rod middle part and is located at the shaft block ring (25) in the annular groove; Boss is located at the annular groove top, and the diameter of boss outer side surface is greater than the internal diameter that clamps the hole.
8. self-operated flow control valve according to claim 6 is characterized in that: said circumferential self-locking structure comprises the ring gear (241) that is located in the adjusting handle and is located at the external toothing (211) of bonnet upper end, external toothing and ring gear engagement.
9. self-operated flow control valve according to claim 6; It is characterized in that: the upper end of said upper valve rod also is provided with the compressing structure that adjusting handle elasticity is pressed down; Said compressing structure comprises pressure spring (26) that is enclosed within the upper valve rod upper end and the threaded fastener (27) that is located at the upper valve rod upper end; The width of threaded fastener is greater than the external diameter of pressure spring, and the lower end of pressure spring is against on the upper-end surface that clamps the hole, and the upper end of pressure spring is against on the lower end surface of threaded fastener.
10. self-operated flow control valve according to claim 9; It is characterized in that: said threaded fastener comprises screw (271) and pad (272); The upper valve rod upper-end surface is provided with interior threaded hole (225); Screw cooperates with interior threaded hole, and the width of pad is greater than the external diameter of pressure spring, and the upper end of pressure spring is against on the lower end surface of pad.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110341255 CN102384291B (en) | 2011-11-02 | 2011-11-02 | Self-operated flow control valve |
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| CN 201110341255 CN102384291B (en) | 2011-11-02 | 2011-11-02 | Self-operated flow control valve |
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| CN102384291A true CN102384291A (en) | 2012-03-21 |
| CN102384291B CN102384291B (en) | 2013-06-05 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829222A (en) * | 2012-08-17 | 2012-12-19 | 浙江盾安阀门有限公司 | Pressure-difference-variable flow control valve |
| CN105003719A (en) * | 2015-08-16 | 2015-10-28 | 嘉兴市大宇机电有限公司 | High-pressure electromagnetic valve provided with built-in static pressure balance device |
| CN108866962A (en) * | 2018-08-08 | 2018-11-23 | 青岛海尔洗衣机有限公司 | A kind of inlet valve and washing machine |
| CN109114271A (en) * | 2018-09-11 | 2019-01-01 | 浙江盾安智控科技股份有限公司 | dynamic flow control valve |
| CN109751418A (en) * | 2017-11-03 | 2019-05-14 | 浙江盾安智控科技股份有限公司 | Dynamic equilibrium valve |
| JP7344623B2 (en) | 2019-12-12 | 2023-09-14 | 株式会社ダンレイ | pressure relief valve |
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| JPH10103545A (en) * | 1996-09-24 | 1998-04-21 | Akimoto Valve Kogyo Kk | Pressure opened type valve |
| CN2466459Y (en) * | 2001-02-27 | 2001-12-19 | 黄莉 | Automatic flow adjusting valve |
| CN2713254Y (en) * | 2004-05-20 | 2005-07-27 | 刘云峰 | Self-operated flow control valve |
| US20090020723A1 (en) * | 2007-07-20 | 2009-01-22 | Ckd Corporation | Manual valve |
| CN201078499Y (en) * | 2007-09-26 | 2008-06-25 | 黄勤根 | Flow control valve |
| CN201802937U (en) * | 2010-08-09 | 2011-04-20 | 张炳仁 | Variable differential pressure flow control valve |
| CN202302159U (en) * | 2011-11-02 | 2012-07-04 | 浙江盾安阀门有限公司 | Self-operated flow control valve |
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| CN102829222A (en) * | 2012-08-17 | 2012-12-19 | 浙江盾安阀门有限公司 | Pressure-difference-variable flow control valve |
| CN105003719A (en) * | 2015-08-16 | 2015-10-28 | 嘉兴市大宇机电有限公司 | High-pressure electromagnetic valve provided with built-in static pressure balance device |
| CN109751418A (en) * | 2017-11-03 | 2019-05-14 | 浙江盾安智控科技股份有限公司 | Dynamic equilibrium valve |
| CN108866962A (en) * | 2018-08-08 | 2018-11-23 | 青岛海尔洗衣机有限公司 | A kind of inlet valve and washing machine |
| CN109114271A (en) * | 2018-09-11 | 2019-01-01 | 浙江盾安智控科技股份有限公司 | dynamic flow control valve |
| CN109114271B (en) * | 2018-09-11 | 2023-12-22 | 浙江迪艾智控科技股份有限公司 | Dynamic flow control valve |
| JP7344623B2 (en) | 2019-12-12 | 2023-09-14 | 株式会社ダンレイ | pressure relief valve |
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Denomination of invention: Self operated flow control valve Effective date of registration: 20211220 Granted publication date: 20130605 Pledgee: Diankou sub branch of Zhejiang Zhuji Rural Commercial Bank Co.,Ltd. Pledgor: Zhejiang deai Intelligent Control Technology Co.,Ltd. Registration number: Y2021980015397 |
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